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GameMath-Chapter 06 카메라

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GameMath-Chapter 06 카메라

  1. 1. Chapter 06 카메라 작성자 허 창 오 [email_address]
  2. 2. 카메라 <ul><li>목적 </li></ul><ul><ul><li>카메라 모델에 대한 기본적 기법과 알고리즘을 안다 </li></ul></ul><ul><ul><li>완벽한 세미나 </li></ul></ul>
  3. 3. 01. 카메라 <ul><li>역할 </li></ul><ul><ul><li>1 인칭 게임에서의 시점 </li></ul></ul><ul><ul><li>3 인칭 게임에서 전체 게임 조망 </li></ul></ul>
  4. 4. 02. 변환 파이프라인
  5. 5. 02. 변환 파이프라인 <ul><li>파이프라인이란 ? </li></ul>< 일반 순차 명령수행 > < 파이프라인 명령수행 > 건조 헹굼 세척 물뿌리기         차 2          건조 헹굼 세척 물뿌리기 차 1 80 분 70 분 60 분 50 분 40 분 30 분 20 분 10 분 시간       건조 헹굼 세척 물뿌리기   차 2          건조 헹굼 세척 물뿌리기 차 1 80 분 70 분 60 분 50 분 40 분 30 분 20 분 10 분 시간
  6. 6. 02.1 Model Space(모델공간) <ul><li>모델이 그려지는 공간 </li></ul><ul><ul><li>디자인의 편의상 선택 </li></ul></ul>Z X Y (0, 0, 0)
  7. 7. 02.2 World Space(전역 공간) <ul><li>월드 좌표계와 동일 </li></ul><ul><ul><li>3 차원 공간상의 최종적인 원점의 좌표계 </li></ul></ul>Z X Y (-1, 4, 6) Z X Y (0, 0, 0)
  8. 8. 02.3 Eye Space(시점공간) <ul><li>실제 보는 위치 </li></ul>(0, 0, 0) Z X Y (-2, 3, 5) Z X Y (-1,-1,-1) Z X Y
  9. 9. 02.4 Clip Space(절단 공간) <ul><li>어떤 물체가 보여지는지 </li></ul><ul><ul><li>시야 절두체를 통해 수행 </li></ul></ul><ul><li>Clip coordinates( 절단 좌표계 ) </li></ul>
  10. 10. 02.5 Normalized Device Coordinates <ul><li>절단 공간상 축정렬 육면체 w = 1, </li></ul><ul><li>Normalized Device Coordinates( 정규화된 장치 좌표계 ) </li></ul><ul><ul><li>Z = 0, 2 차원 평면 (x, y) </li></ul></ul>
  11. 11. 02.6 Window Coordinates <ul><li>Viewport Transform </li></ul><ul><ul><li>각 정점의 정규화된 좌표계를 실제 모니터 상(Window Coordinates)의 x, y 좌표료 변환 </li></ul></ul>
  12. 12. 03. 시야 절두체 <ul><li>카메라에 의해 보일 수 있는 것들을 담는 범위 </li></ul><ul><li>프레임 재생 속도 – 초당 그려지는 횟 수 </li></ul><ul><li>최소한 30 회 이상 그려줘야 함 </li></ul>Frame Fresh Rate( 프레임 재생율 )
  13. 13. 03. 시야 절두체 <ul><li>게임 속도에 밀접한 영향 </li></ul><ul><ul><li>절두체의 공간을 줄여 속도를 얻음 </li></ul></ul>
  14. 14. 04. 투영 <ul><li>Perspective Projection( 원근 투영 ) </li></ul><ul><li>Orhographic Projection( 직교 투영 ) </li></ul>
  15. 15. 05. 일인칭 시점 기본 카메라 <ul><li>카메라 모델 </li></ul><ul><ul><li>glLookAt(OpenGL) – 카메라 위치, 시선 방향, 상향 벡터 </li></ul></ul>
  16. 16. 06. 3인칭 시점 카메라
  17. 17. 07. 참고 자료 <ul><li>Computer Graphics using openGL </li></ul><ul><ul><li>Chapter 7. Three-Dimensional Viewing </li></ul></ul>

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